1. Ashton, N. and Cunha-Vaz, J.G. (1965) Arch. Ophthalmol., 73:211O223.
2. Maurice, D.M. (1963) Exp. Eye Res., 2: 33–38.
3. Cunha-Vaz, J.G. and Maurice, D.M. (1967) J. Physiol., 191: 467–486.
4. Maurice, D.M. (1959) Am. J. Ophthal., 47: 361–367.
5. Crank, J. (1956) The Mathematics of Diffusion, 1st edn. pp. 59 and 93, Oxford: Clarendon Press.